Inspection lot for sub vendor?

Dear guru's

I am not able to create an inspection lot for the raw materials, the scenario is Clint have one vendor, under this vendor 18 sub parties are there. MM people have maintain vendor records, but they are not maintain sub parties records. Issue is QM department required inspection lot based on sub parties but MM people create po based on vendor. How do I create inspection lot based on sub parties automatically? Please help me.

Regards

Ramesh